Glass gage for boilers.



W. F. OTTO.

GLASS GAGE FOR BOILERS.

WTNESSES 35 MQK ZI APPLICATION FILED MAR.9. 1914.

Patented Dec. 22, 1914.

- ATTORNEY THE NORRIS PETERS CO FHoToLITHo.. wAsHNbTON. D. c.

"- UNITED STATES PATENT OFFICE.

WILLIAM F; OTTO, or WILKES-BARRE, PENNSYLVANIA.

7 GLASS GAGE roza BOILERS. p

v To all whom it may concemi v Be it known that I VVILLIAMTF. O'r'ro, acitizen of the United States, and a resident hoflVilkes-Barre,countyflof Luzerne, State of Pennsylvania, have invented certain new anduseful' Tmprovements in Glass Gages :fer Boilers, of which thefollowing. is a specification. V

My invention relates to an improvement in glassgages for boilers.

. It relates more particularly to gages of the character in which adetachable glass I ent therefrom.

plate constitutesone sideof passage-way for holding water and it has forits object to provide an improved Construction of means for detachablybut securely holding` the glass plate in proper position.

A further object is to provide a means of such character that the 'glassplate is` not liable to be fractured. i

'Other 'objects and advantages' of my in-'. vention will be referred toin the` detail ed description-whichfollows or will be appar- In orderthat my invention may be more readily understood reference should be hadto the 'accompanying drawings illustrating v a convenient embodimenttheref( It will be understood, however, that changes in the details ofConstruction may be `made within the scope of the claims withoutdeparting 'from my invention. I i i 'In the drawingsz Figure 1 isalongitudinal section of a gage Construction embodying my invention; Fig.2 is a front elevation of the same, .the pipe connections therewith'being omitted; Fig. 3 is' a top planview of the same, one of the vpipeconnections 'being shown in section; and Fig. %is a transverse sectiononthe line 4-4 of lg. 2. i a e Referring to the drawings, l designates aplate member, preferably of metal, provided at its rear side with aswellorenlargement 2 extended longitudinally and oentrally of the plate. Theopposite edges of the plate l are provided with forwardly eXtendingfianges 3the outer sides of which fianges are slightly convergent. 'Theinner sides, however, are parallel with respect to each other.`

The front edges of the flanges 3 are pro- V vided' with inwardlyextending portions 4 constituting shoulders' or ribs upon the innersides of the outer front edges of said flanges.

' slpeeifioation of Letters Pateit. :Patented Dec. 22, 1914 Applicationfiled March 951914. V seria No. 323 57.

` The opposite ends of theswelled or enlarged portion 2 :are somewhatenlarged as indicated at and' also the upper and i lower ends ofthepassage-way formed by such swelled or enlarged portion are closed iby' material 7' and 8 which material is prolong flat wedge 16 thecentral portion of y 'whichis cutaway as shown at 17. The opposite edgesof this wedge engage the shoulders 'or beads 4- upon the inner sides ofthe jfront edges of the flanges 3. It should be noted that theseshoulders or beads incline slightly from their bottom upwardly so thatthe width of the space between the inner surfaces of the said shouldersand the confronting surface of 'the plate 1 is somewhat greater at; thebottom of said plate than at the-top. I

In order that theiglass platetl may effectually close' and seal thefront side of the passage-way formed by the swelled or enlargedportion2, I provide a Washer or packng 18 of suitable material which issubstantially of'the same shape as that of the glass plate and itscentral portion iscut away in order that `the'view through the glass tothe water in the said passage-way r shall not bedisturbed Also in orderto prevent the wedge 16 from Contacting directly with the glass, I haveprovided an outer Washer 20 which is of substantially the same shape andConstruction as that of the :a

Washer 18. The Washer 20 is, as will be u seen upon an examination ofthe drawings,

situatedbetween the outer side portions and theu'pper end portions ofthe wedge 16 and' the confronting portions of the front side of theglass 1'5.

In order to draw the wedge into position and clamp it firmly against theglass plate 15, I haveprovided the upper edge of the wedge with ascrew-threadedstem 21 which extendsthrough a Washer 22 which is 'seatlltending fianges at its opposite edgeswhich larged or sweiled portion 2of the pia-teh 'ed upon the uppefedges c t-'the fi tnges 3.

The height of ,the Water in the boiier may be `uscertained byobservation through the'glass plate in the nsual and-known manner.

By the employ'ment "of e Construction' em bodying' my invention as &boie described and ilhistrated ;in the drtwings,- have found that the glassplate is -securely .and

efiiciently held in place insnch ntnne' as to ,pi-event letkageof Waterfrom thepssage- Way closed the-eby and alsothit the'said plete isso{protected from the Wedge 16 and that .the pressiire exerted by said`Wedge upon the gless is so eveniy distributedupon the gless that theletter is `mt'subjectd to iinev'en strains so that is not likely tobecoine-frectured ,or broken.

` I ,claimi I g '1.' A gege for boilers coinpr'sing a member-'having avg'oove foi'med upon one side tl er eof, ,fienge'siipon-the oppositeedges of said-ineinbegthe outer edges of seid fienges bengprovided Withinwardly 'ext-ending' 'ortions 'fOl`n1iI1 ,shoiilders the inner surhoplate between' thesaid fianges iand elos-` 'faces of said shouldersbeing inclined from oneendtoward the other, 'e -transparent plate seetedagainst the said member and closingthe gro'ove thereinyand ewedge n-',terposed 'between'the said'plite and the said shoulders for holding thesaid pl'ete in positien. r

2. A gege for boilers comprising a metal- 'lic plate having@ grooveformed and eX- tendng' longtudnally 'thereofl the seid 'plate beingprovided With foi'wardly exfi nges are provided With nwardlyextendshculdei-s at their enter edges, the 'in-v ner siirface of saidshoulders'being indined from one 'endtoward the other, a glass plateseated ege nstthe surface of the' said metal 'ing one side of the grooveformed instid pltte, e Washer interposed between. one side of the gl'assplate and the inetallic plate, and a'wedge interposed between the othery copies of this patent may be obtained for side of-the giessplateandthesaid shoulders and holding .the said gla ss platein position,

3. A gege for boilers comprising a metallic -plate having groove formedtherein and extending longitudinally thereof. and alsohaving fianges atits opposite edges,`

,the :front edges of said flenges being pro-. j

- Vided v with inwa'dlv extended shoulders the sui-faces of whichincline from one end to -Wai-d the seid metallic p1`ate,' a glass plateinte 'posed between the said shoulders and the seid inetallic pltt e forclosngone side of the groove 'in seid-plate, and Washers npon the frontand rearsides of the said glass plate, the 'central ,portionsof whichWashers are removed, the rear asher' 'being nterposed between the saidmetzv lhctplete e and theopnosing side of thesaid glassplate,

:L Wedge interposed between the saids'houL ders 'and the other side,ofstid glss plate ,and being seated 'against "the said front Washerfoi' holding .the said" 'plete r in posi;

tion, the central poi'tion of thesaid Wedge 7 being removed, nd 'meansfoi* securin'g the said Wedge in position against the siidglss 4:. In agege foiboilers, the combination of a plate'having a g'roove therein'extend ing 'longitu'dinajlly "thereof' and' provided With closures atits opposite ends ;having openings therethrough; the said `plate being 4provided Withlongitudinal fl a nge's at its opnoste edges whichfianges'areprovided With inwardly extendng shoulders ztt'therfront edes, which shoulders aire inclined longitninally, 'a gi'ass" plate'seated against one ;side the siid first named plat'e-between ,the sad-.flenges and closing the said groove, 'a Washer seatediipon theuppenends of' the seid flanges, a Wedgeinterposed between" the saidshonlders 'and the said* gla'ss pinte,

the 'seid We'dge havingn stenfjextending through& hole in said Washeiya'nd huts engagng the said stem and Contacting With the said Washer, thesaid nuts being adapted. 'to draw the said Wedge firmiy'in position iagainst the said glassplatehnd thes'eid shoulders and to hold the se ne*in position. testmon'ythat I 'claim the foregoing as ;ny invention Ihave hereunto signed' in y name this-%rd day of J anua'ry, A. D. 1914.

"In the presence of--' i f G. W.,WIL1\4)T, V W JLLO D.

fli7e cents each, by addressing the ommissione of;Patents. i rswashington'nciv i v.,. i v\ i .LLIAM F. o re( a

